what is the emperical formula of vitamin b12?

Answer Posted / guest

its emperical formula is C63H90N14PCO

Is This Answer Correct ?    4 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What are hydrophobicity scales, and how are they used?

1424


Explain which branch of science deals with the transformation of chemical energy into electrical energy and vice versa?

537


What type of column is generally used to separate amino acids from each other?

1659


why we use 96 well plate in ELISA plate reader?

1855


What is the Chemical formula for Epsom salt?

604






What happens if Lattice energy increases?

638


Define Hybridization?

636


What is the quaternary structure of a protein? Do all proteins have quaternary structure?

580


Bacteria are prokaryotic cells, i.e., They do not have membrane-delimited nucleus. Eukaryotes have cells with delimited nucleus. Where in these types of cells can dna are found?

670


What is chemical formula for borax?

569


what is familiar hypercholesterolemia?

1960


Give the type of functional group, general formula, and the suffix for methanoic acid (or) formic acid.

540


What is the numeric relation between pyrimidine and purine bases in the dna molecule? Is that relation valid in rna molecules?

610


Name a sulphur containing amino acid.

587


I have given the protocol for the cyclodextrin glygosyl transferase assay: One ml of appropriately diluted enzyme sample was incubated at 60 °C for 15 min with 5 ml of 1% (w/v) gelatinized soluble starch in 50 mM, 7.0-pH Tris–HCl buffer. Reaction was terminated by boiling the reaction mixture for 3 min and reaction volume was made to 10 ml with distilled water. Two ml of above reaction mixture was withdrawn and mixed with 3 ml of Tris–HCl buffer, 5 ml of 125 mM Na2CO3, and 0.5 ml of phenolphthalein (25 mg phenolphthalein/100 ml absolute alcohol). Absorbance was measured at 550 nm. The percent decrease of sample was calculated with respect to control containing 5 ml of buffer, 5 ml of sodium carbonate and 0.5 ml of phenolphthalein. where Acontrol = absorbance of control and Atest = absorbance of sample. The amount of β-cyclodextrin (β-CD) produced was estimated from the standard graph of 0–500 μg/ml β-CD concentration against % decrease in absorbance. One unit of CGTase was defined as the amount of enzyme required to produce 1 μm of β-CD/min. Please can you suggest me the formula for the defination given in the last line

1714